diff --git a/CRM/Core/BAO/Address.php b/CRM/Core/BAO/Address.php
index 71ebf132db34..9c40a315d6a1 100644
--- a/CRM/Core/BAO/Address.php
+++ b/CRM/Core/BAO/Address.php
@@ -416,9 +416,9 @@ public static function dataExists(&$params) {
         if (substr($name, 0, 7) == 'country') {
           // make sure its different from the default country
           // iso code
-          $defaultCountry = $config->defaultContactCountry();
+          $defaultCountry = CRM_Core_BAO_Country::defaultContactCountry();
           // full name
-          $defaultCountryName = $config->defaultContactCountryName();
+          $defaultCountryName = CRM_Core_BAO_Country::defaultContactCountryName();
 
           if ($defaultCountry) {
             if ($value == $defaultCountry ||
diff --git a/CRM/Core/BAO/CustomField.php b/CRM/Core/BAO/CustomField.php
index 07530e3f5228..26907960b856 100644
--- a/CRM/Core/BAO/CustomField.php
+++ b/CRM/Core/BAO/CustomField.php
@@ -1261,7 +1261,7 @@ public static function setProfileDefaults(
         if (!$value) {
           $config = CRM_Core_Config::singleton();
           if ($config->defaultContactCountry) {
-            $value = $config->defaultContactCountry();
+            $value = CRM_Core_BAO_Country::defaultContactCountry();
           }
         }
       }
diff --git a/CRM/Core/Config.php b/CRM/Core/Config.php
index 4e3679fb6d4d..9e723ddaf43b 100644
--- a/CRM/Core/Config.php
+++ b/CRM/Core/Config.php
@@ -478,6 +478,7 @@ public function addressSequence() {
    * @deprecated
    */
   public function defaultContactCountry() {
+    CRM_Core_Error::deprecatedFunctionWarning('CRM_Core_BAO_Country::defaultContactCountry');
     return CRM_Core_BAO_Country::defaultContactCountry();
   }
 
@@ -485,6 +486,7 @@ public function defaultContactCountry() {
    * @deprecated
    */
   public function defaultContactCountryName() {
+    CRM_Core_Error::deprecatedFunctionWarning('CRM_Core_BAO_Country::defaultContactCountryName');
     return CRM_Core_BAO_Country::defaultContactCountryName();
   }
 
diff --git a/CRM/Core/PseudoConstant.php b/CRM/Core/PseudoConstant.php
index c53c451d2d37..14e2e7fcf220 100644
--- a/CRM/Core/PseudoConstant.php
+++ b/CRM/Core/PseudoConstant.php
@@ -836,9 +836,9 @@ public static function country($id = FALSE, $applyLimit = TRUE) {
       self::populate(self::$country, 'CRM_Core_DAO_Country', TRUE, 'name', 'is_active', $whereClause);
 
       // if default country is set, percolate it to the top
-      if ($config->defaultContactCountry()) {
+      if (CRM_Core_BAO_Country::defaultContactCountry()) {
         $countryIsoCodes = self::countryIsoCode();
-        $defaultID = array_search($config->defaultContactCountry(), $countryIsoCodes);
+        $defaultID = array_search(CRM_Core_BAO_Country::defaultContactCountry(), $countryIsoCodes);
         if ($defaultID !== FALSE) {
           $default[$defaultID] = CRM_Utils_Array::value($defaultID, self::$country);
           self::$country = $default + self::$country;
diff --git a/CRM/Event/Cart/Form/Checkout/Payment.php b/CRM/Event/Cart/Form/Checkout/Payment.php
index b5b6b6fef0c2..ece09d61d1ea 100644
--- a/CRM/Event/Cart/Form/Checkout/Payment.php
+++ b/CRM/Event/Cart/Form/Checkout/Payment.php
@@ -714,7 +714,7 @@ public function setDefaultValues() {
 
     $config = CRM_Core_Config::singleton();
     $default_country = new CRM_Core_DAO_Country();
-    $default_country->iso_code = $config->defaultContactCountry();
+    $default_country->iso_code = CRM_Core_BAO_Country::defaultContactCountry();
     $default_country->find(TRUE);
     $defaults["billing_country_id-{$this->_bltID}"] = $default_country->id;